Next Article in Journal
Frontiers in Nucleic Acid Nanotechnology
Previous Article in Journal
Titration of DNA/Carbon Nanotube Complexes with Double-Chained Oppositely Charged Surfactants
Article Menu

Export Article

Open AccessArticle
Nanomaterials 2015, 5(2), 737-749; doi:10.3390/nano5020737

Synthesis, Characterization and Gas Sensing Properties of Ag@α-Fe2O3 Core–Shell Nanocomposites

1
Department of Materials Science and Engineering, Shiraz University, 71946-85115 Shiraz, Iran
2
Department of Electronic Engineering, Chemistry and Industrial Engineering, University of Messina, C.da di Dio, 98166 Messina, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 25 March 2015 / Revised: 20 April 2015 / Accepted: 29 April 2015 / Published: 5 May 2015
View Full-Text   |   Download PDF [2723 KB, uploaded 19 May 2015]   |  

Abstract

Ag@α-Fe2O3 nanocomposite having a core–shell structure was synthesized by a two-step reduction-sol gel approach, including Ag nanoparticles synthesis by sodium borohydride as the reducing agent in a first step and the subsequent mixing with a Fe+3 sol for α-Fe2O3 coating. The synthesized Ag@α-Fe2O3 nanocomposite has been characterized by various techniques, such as SEM, TEM and UV-Vis spectroscopy. The electrical and gas sensing properties of the synthesized composite towards low concentrations of ethanol have been evaluated. The Ag@α-Fe2O3 nanocomposite showed better sensing characteristics than the pure α-Fe2O3. The peculiar hierarchical nano-architecture and the chemical and electronic sensitization effect of Ag nanoparticles in Ag@α-Fe2O3 sensors were postulated to play a key role in modulating gas-sensing properties in comparison to pristine α-Fe2O3 sensors. View Full-Text
Keywords: Ag@α-Fe2O3; core–shell; nanocomposite; synthesis; gas sensor; ethanol Ag@α-Fe2O3; core–shell; nanocomposite; synthesis; gas sensor; ethanol
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Mirzaei, A.; Janghorban, K.; Hashemi, B.; Bonavita, A.; Bonyani, M.; Leonardi, S.G.; Neri, G. Synthesis, Characterization and Gas Sensing Properties of Ag@α-Fe2O3 Core–Shell Nanocomposites. Nanomaterials 2015, 5, 737-749.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top